Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Monday, June 29, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 5h 44m at 5:45 am (0.4 ft)
Next high tide : 11:57 am (8.1 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:01 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jul 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:108.67:349.612:580.51:100.95:028:25Waxing Gibbous1Wed
2Thu8:138.38:309.62:020.62:091.25:028:25Waxing Gibbous2Thu
3Fri9:128.29:229.53:010.53:041.45:038:25Waxing Gibbous3Fri
4Sat10:058.110:119.63:540.43:541.55:038:25Waxing Gibbous4Sat
5Sun10:538.210:559.64:420.44:401.55:048:24Full Moon5Sun
6Mon11:378.211:379.65:260.35:221.45:058:24Full Moon6Mon
7Tue12:188.36:060.36:021.45:058:24Full Moon7Tue
8Wed12:179.612:568.46:430.36:401.35:068:23Full Moon8Wed
9Thu12:549.61:328.57:170.37:171.35:078:23Waning Gibbous9Thu
10Fri1:309.52:078.57:500.37:551.35:088:22Waning Gibbous10Fri
11Sat2:069.42:428.68:240.48:331.35:098:22Waning Gibbous11Sat
12Sun2:439.23:178.88:580.59:151.25:098:21Waning Gibbous12Sun
13Mon3:238.93:558.99:360.610:001.25:108:21Third Quarter13Mon
14Tue4:088.74:379.110:170.710:491.15:118:20Third Quarter14Tue
15Wed4:568.45:229.311:020.911:410.95:128:19Third Quarter15Wed
16Thu5:498.26:139.511:511.05:138:19Third Quarter16Thu
17Fri6:488.17:099.712:380.812:461.05:148:18Waning Crescent17Fri
18Sat7:528.28:0910.11:400.51:461.05:158:17Waning Crescent18Sat
19Sun8:568.49:1010.52:430.12:480.75:168:16Waning Crescent19Sun
20Mon9:578.810:0910.93:43-0.43:480.35:178:15New Moon20Mon
21Tue10:549.211:0711.24:40-0.94:460.05:178:15New Moon21Tue
22Wed11:509.65:35-1.35:43-0.45:188:14New Moon22Wed
23Thu12:0311.412:4410.06:28-1.56:40-0.65:198:13New Moon23Thu
24Fri12:5811.41:3610.27:19-1.57:35-0.65:208:12Waxing Crescent24Fri
25Sat1:5211.12:2810.38:09-1.38:30-0.55:218:11Waxing Crescent25Sat
26Sun2:4610.63:2010.39:00-0.99:28-0.35:228:10Waxing Crescent26Sun
27Mon3:4310.04:1310.19:52-0.310:270.05:248:09First Quarter27Mon
28Tue4:419.35:089.810:450.311:270.45:258:08First Quarter28Tue
29Wed5:418.76:049.511:400.85:268:06First Quarter29Wed
30Thu6:428.27:019.312:290.612:381.35:278:05First Quarter30Thu
31Fri7:457.98:009.11:330.81:381.65:288:04Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

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What time does the tide turn (slack tide) in South Harpswell, ME today?

Slack tide in South Harpswell, ME is approximately 8:51 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in South Harpswell, ME?

South Harpswell, ME is currently in a spring phase. Tonight's moon is 100% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are South Harpswell, ME tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for South Harpswell, ME?

Tide predictions for South Harpswell, ME come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for South Harpswell, ME?

Tide data for South Harpswell, ME is sourced from NOAA Station #8417647. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8417647.

What is the moon phase in South Harpswell, ME tonight?

Tonight the moon over South Harpswell, ME is Full Moon (100% illuminated). This places South Harpswell, ME in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA